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<head><meta charset="utf-8"><title>Help finding the correct commits to cherry-pick · t-compiler/wg-llvm · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/187780-t-compiler/wg-llvm/index.html">t-compiler/wg-llvm</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/187780-t-compiler/wg-llvm/topic/Help.20finding.20the.20correct.20commits.20to.20cherry-pick.html">Help finding the correct commits to cherry-pick</a></h3>

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<a name="216678247"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187780-t-compiler/wg-llvm/topic/Help%20finding%20the%20correct%20commits%20to%20cherry-pick/near/216678247" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Jake Goulding <a href="https://rust-lang.github.io/zulip_archive/stream/187780-t-compiler/wg-llvm/topic/Help.20finding.20the.20correct.20commits.20to.20cherry-pick.html#216678247">(Nov 13 2020 at 21:49)</a>:</h4>
<p>The aarch64-apple-darwin port is encountering an assertion in <code>buildUnmerge</code> (<a href="https://github.com/rust-lang/rust/issues/78881">full details</a>). I've reduced some LLVM IR and tested with LLVM current development, where it no longer occurs. I then bisected LLVM to a specific commit that appears to fix the problem.</p>
<p>However, after cherry-picking it to the Rust fork, the problem persists. There <em>were</em> conflicts that I might have botched, but I feel reasonably confident that I did it right.</p>
<p>Do people have a preferred method for trying to figure out which commits would ultimately be involved in the fix?</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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